INTEGRAL IL34C87

IL34C87
CMOS Quad TRISTATE Differential Line Driver.
General Description
The IL34C87T is a quad differential line driver
designed for digital data transmission over balanced
lines. The IL34C87T meets all the requirements of
EIA standard RS-422 while retaining the low power
characteristics of CMOS. This enables the
construction of serial and terminal interfaces while
maintaining minimal power consumption. The
IL34C87T accepts TTL or CMOS input levels and
translates these to RS-422 output levels. This part
uses special output circuitry that enables the
individual drivers to power down without loading
down the bus. This device has separate enable
circuitry for each pair of the four drivers. All inputs
are protected against damage due to electrostatic
discharge by diodes to VCC and ground.
Pinning
Pin
Symbol
A
A1
A2
En A/B
13
D2
Description
Input of driver A
Output А
Inverted output А
input of switching outputs
of A and B receivers into
the third state
Inverted output B
Output B
Input of driver B
General pin
Input of driver C
Output C
Inverted output C
input of switching outputs
of C and D receivers into
the third state
Inverted output B
14
D1
Output B
15
D
Input of driver B
16
VCC
01
02
03
04
05
06
07
08
09
10
11
12
B2
B1
B
GND
C
C1
C2
En C/D
Pin of power supply
1
Designation
Of microcircuit in package
IL34C86N Plastic DIP
IL34C86D SOIC
TA from minus 40 to plus 85 °C
Pin configuration.
01
16
VCC
A1 02
15
D
A2 03
14 D1
A
En A/B 04
B2
05
13
D2
12 En C/D
B1 06
11 C2
B
10 C1
07
GND 08
09
C
Features
• TTL input compatible
• Typical propagation delays: 6 ns
• Typical output skew: 0.5 ns
• Outputs won’t load line when VCC = 0V
• Meets the requirements of EIA standard
RS-422
• Operation from single 5V supply
• TRI-STATE outputs for connection to
system buses
• Low quiescent current
• Available in surface mount
IL34C87
Truth Table
Input
Control
Non-Inverting
Input
Output
H
H
H
L
H
L
X
L
Z
L = Low logic state
H = High logic state
X = Irrelevant
Z = TRI-STATE (high performance)
Inverting
Output
L
H
Z
Structure of microcircuit.
Output
Input
Inverted
output
Control
input
Table 1 – Limiting and extreme parameters
Parameter
Supply voltage
DC input voltage
Symbol
VCC
VIN
Operating condition
min
4.50
0
max
5.50
VCC
Maximum ratings
min
-0.5
-1.5
max
7
VCC+1.
5
7
+20
7
+150
—
Units of
measureme
nt
V
DC output voltage
VOUT
0
VCC
-0.5
Protection diode current
VDIFF
—
—
-20
Voltage on input Enable
VIN
—
—
—
Output current
—
—
—
-150
mA
Input Rise or Fall Times
tr, tf
—
500
—
ns
(tr, tf)
Dissipated
DIP
PD
—
—
—
1736*
mW
power
SO
—
—
—
1226*
Operating Temperature
TA
-40
+85
—
—
°С
Range (TA)
Storage temperature
TSTG
—
—
-65
+150
Temperature of
TL
—
—
—
260
soldering, 4s
*
- at increasing temperature higher than 25°C PD decreased on 13.89mW/°C for DIP package and on
9.80mW/°C for SO package.
2
IL34C87
T= -400 ÷ +850C
Table 2 -Electric parameters
parameter
High level input voltage
Low level input voltage
High level output voltage
Low level output voltage
Differential output voltage
Difference in differential outputs
Output voltage
Difference in common mode
output
symbol
conditions of
measurement
Min
Max
—
0.8
—
0.5
—
0.4
V
IOUT = -20mA
IOUT = +48mA
RL = 100 Ohm
RL = 100 Ohm
2.0
—
2.5
—
2.0
—
RL = 100 Ohm
RL = 100 Ohm
—
—
3.0
0.4
V
V
VIN = VCC, 0V,
VIH or VIL
IOUT = 0mkA,
VIN = VCC or 0V
IOUT = 0mkA,
VIN = 2.4 or 0.5V
VOUT = VCC or 0V, VCONTROL
= VIL
—
±1.0
mkA
—
500
mkA
—
2.0
mA
—
±5.0
mkA
VIH
VIL
VOH
VOL
VT
VT − VT
VOS
VOS
− V OS
Input current
IIN
Consumption current
ICC
standard
units of
measureme
nt
V
V
V
Output current of the third
state
Short circuit output current
IOZ
ISC
VIN = VCC or 0V
-30
-150
mA
Output current of the off state
IOFF
—
—
—
100
-100
11
mkA
tPLH, tPHL
VCC = 0V, VOUT = 6V
VCC = 0V, VOUT = -0.25V
tr, tf ≤ 6ns
Skew
tr, tf ≤ 6ns
—
3
tRISE, tFALL
tr, tf ≤ 6ns
—
10
tPZH
tr, tf ≤ 6ns
—
25
tPZL
tr, tf ≤ 6ns
—
26
tPHZ
tr, tf ≤ 6ns
—
8
tPLZ
tr, tf ≤ 6ns
—
12
Time of propagation delay at
switching off, switching on
Asymmetric transition time
when switching in, switching
off
Transition time when switching
in, switching off
time of the third state
propagation delay on input
Enable
time of the third state
propagation delay on input
Enable
time of the third state
propagation delay on input
Enable
time of the third state
propagation delay on input
Enable
3
ns
IL34C87
Figure 4 – Time diagram of signals at changing dynamic parameters tTLH, tTHL, tPLH, tPHL,
SKEW.
3.0 V
Control Input
(Enable)
f = 1MHz,
tr = tf < 6 ns
0.0 V
1.3 V
Output
VOL
+ 0.3 V
V OL
0.8 V
T PZL
T PLZ
V OH
Output
V OH- 0.3 V
2.0 V
T PZH
T PHZ
.
3.0 V
Input
0.0 V
90 %
90 %
Output
(Differential)
10 %
10 %
t THL
t TLH
3.0 V
Input
f = 1MHz,
tr = tf < 6 ns
1.3 V
0.0 V
t PHL
t PLH
Output
1.3 V
SKEW
1.3 V
Output
t PHL
t PLH
4